Exports from Iraq's northern oilfields are back to normal after a spate of attacks earlier this month crippled the main pipeline carrying Iraqi crude to Turkey, the state-run Northern Oil Co. said Tuesday. Repairs were completed and oil began flowing through the line to the Turkish port of Ceyhan on Tuesday, a senior company official said on condition of anonymity, Iraq was pumping an average of 400,000 barrels of crude a day through Turkey before a series of sabotage attacks earlier this month. By using substitute lines, the pumping rate was brought back to 250,000 barrels a day last week. With the main line repaired, the country is now ready to start pumping 600,000 barrels day, the official said.